Door stop



I. KREITLER DOOR STOP Filed Aug. 9, 1957 Sept. 27, 193s.

ATTORNEYS Patented Sept. 27, 1938 IuNrr-latl)' STATES PLAT o DOOR STOP AIgnatius Kreitler, River Aux Vases,vMo. ApplicationAugust 9, 1937,Serial No. 158,179" i 4 claims. (opzegt-164i i Y This invention relatesto door stops, and its general object is to provide a device -of thatcharacter for disposal in the path of a swinging door to hold vthelatter in open position andwhich is actuated automatically for thatpurpose, merely by the engagement of thedoor therewith.

A further object is to provide a door stop that isautomatic tothe extentabove set forth, and which must be manually` actuated toV release the,door,therefrommerelyby slight pressure on. the part of the user,.yet,accidental releasing or closing of the door,.suchas by aircurrents,windor the like is impossible.

Anotherobject yis toeprovide a door stop Lthat is adapted to bepermanently` xed in position for use, is simple in construction,inexpensive tomanufacture, easy to install, and extremelyelcient inoperation, use andservice.

'Ihis invention also consists in certain other features of constructionand in the .combination and arrangement of the several parts, to behereinafter fully described, illustrated in the accom panyingdrawing.and44 specifically pointed out in the'appended claims.'`

In describing the invention in detail, reference will be had to theaccompanying drawing wherein like characters denote like orcorresponding parts throughout the several views, and in which:

Figure 1 is a View illustrating my door stop in use.

Figure 2 is a side elevation of the door stop per se.

Figure 3 is a top plan view thereof.

Figure 4 is a vertical sectional View, with parts in elevation.

Figure 5 is a sectional view taken approximately on line 5-5 of Figure4, looking in the direction of the arrows.

Referring to the drawing in detail, and particularly to Figure 1, itwill be noted that my door stop is adapted to be set into the floor inthe path of a swinging door, and for that purpose it is provided with asubstantially U-shaped frame having secured to the upper ends of theparallel arms thereof an attaching plate 2 which extends outwardlybeyond the arms and has openings adjacent its outer ends to receivescrews or like securing means for securing the frame within the floorand of course with the plate countersunk therein, as clearly shown inFigure 1.

Fixed to the lower or bight portion of the frame, as well as to theattaching plate 2 for disposal in close proximity to the arms of theframe are tubes 3 and 4 respectively which are disposed parallel to eachother, aswellas tozthe arms, as clearly shown in Figures Z-and 4. Thetubes arefeach providediwith alslotfffextending longitudinally for -a.portion'of the height thereof from theirlower-ends vand intheiriconfronting4 faces, for a'purposewhich will bepresentlydescribed,and while the tubeNS-fterminates flush with the plate`2 rand-'fismounted in an'jopening therein, the tube 4 extends throughariopeninginthe plate, and'terminates acons'iderable dis-` tance above the plate,as best shown'inf-Figure 4.

Mounted for slidable movement in the tube3 is a bolt 6, and the -tube 4has slidably-mounted therein a rod 1. The bolt 6 and rod 'I Aeach have arack 8` secured thereto and which 'extends= through the slot, with theteeth thereof engaged with the teeth lof afpinion that is -rotatablymounted'on a stubshaft I Ilyandheld accordingly by a. nut threaded 'onthe shaftgthe- `latter ybeing fixed to an upright strip -I Ithatjbridges thebight portion*ofthe'frame andthe plate vand has' itsends `secured' theretogas clearlyshown in Figure 2.

`rIlie rod is :,recessedatits uplnergend toprovide al hookI 2`for thepurposeofwreceivingthehooked lower end I3 of a trigger dog I4 which ispivotally mounted on a pin I5 that bridges the tube 4 adjacent the upperend thereof. The upper end of the'dog I4 is reduced and secured to andextending through the reduced portion is a headed pin I6 that alsoextends through a slot I1 in the upper end portion of the tube 4, fordisposal in the path of the door to be engaged by the latter for movingthe hooked lower end YI3 of the dog or catch I4 from the hook I2 of therod 8, and

against the action of a coil spring I8 that lhas its end convolutionsengaged with the reduced upper end of the dog and the tube`4respectively as clearly shown in Figure 4, which likewise discloses the.fact that the coil spring is heldin po sition, due to the fact that aportion thereof sur-v rounds the headed pin.

Surrounding the shaft I0 in coiled formation and having one end fixedthereto is a spring I9 which has its opposite end fixed to the pinion 9adjacent the periphery thereof, by a pin as shown and by that structureit will be obvious that the bolt 6 is urged outwardly of its tube 3 orin projected position as shown in Figure 4. However, it will be furtherobvious that the bolt isY held within itsV tube by the engagement of thehooked lower end I3 with-the hook I2, vas shown in full lines in Figure4. When the parts are arranged in the latter mentioned position, and thedoor is moved to open position, to contact the head of and the spring I9will move the bolt and rod to the full line position of Figure 4, andthereby the bolt will be arranged in the path of the door, with thelatter between the projecting upper end of the tube 4 and the bolt, asclearly shown in Figure 1.

I preferably provide a` closure cap 20 for the projecting upper end ofthe tube 3, and which is slidably mounted thereon and secured thereto inany manner, and the cap is provided with a slot to accommodate theheaded pin I6. However, any suitable means may be employed for closingthe upper end of the tube 4. t

It is thought from the foregoing description that the advantages andnovel features of the invention will be readily apparent.

It is to be understood that changes may be made in the construction andin the combination and arrangement of the several parts, provided thatsuch changes fall within the scope of the appended claims.

WhatI claim is:

1. A door stop comprising means to be xed in the path of a door, aslidably mounted spring pressed bolt associated with the xed means andfor disposal into and out of said path, means slidably mounted andconnected to said bolt for movement therewith in unison, releasablemeans normally holding the slidably mounted means against movement andthe bolt out of said path, means included in the holding means to beengaged by said door for releasing the slidably mounted means fordisposing the bolt in said Path for cooperation with the xed means forholding the door between the bolt and the fixed means.

2. A door stop comprising a frame, means fixed to said frame and to bearranged in the path of a door, a bolt slidably mounted in the frame fordisposal into and out of said path, a rod slidably mounted in saidframe, rack and pinion means connecting said bolt and rod for movementin unison, means releasably connected to the rod for normally holdingthe bolt out of said path, spring means for urging the bolt in saidpath, means included in the holding means and to be engaged by said doorfor releasing the rod for disposing the bolt in said path forcooperation with the fixed means for holding the door between the boltand the fixed means.

3. A door stop comprising a frame, a pair of tubes secured in said frameand one tube extending above the frame for the upper end thereof to bedisposed in the path of a door, a bolt slidably mounted in the othertube for disposal into and out of said path, means slidably mounted inthe extended tube, racks on the slidably mounted means and boltrespectively, a pinion meshing with the racks, spring means for thepinion for urging the bolt into said path, means releasably connected tothe slidably mounted means for holding the bolt out of said path, andmeans for actuating the holding means and mounted on the upper end ofthe extended tube to be engaged by said door for releasing the holdingmeans for disposing the bolt in said path for cooperation with theextended portion for holding the door between the bolt and extendedportion.

4. A door stop comprising a frame adapted to' be set into a floor, apair of tubes mounted in the frame and one of said tubes extending abovethe frame for disposal in the path of a door, a'bolt slidably mounted inthe other tube, a rod slidably mounted in the extended tube and having ahooked upper end, racks secured to the bolt and rod, a pinion meshingwith the racks, spring means for the pinion for urging the bolt intosaid path, a spring pressed dog pivotally mounted in the extendingportion of the extended tube and engageable with the hooked upper endfor holding the bolt out of said path, a headed pin engaged by the doorto be actuated thereby for releasing the dog from the rod for disposingthe bolt in said path for cooperation with the extended portion forholding the door between the latter and the bolt, and a cap for` closingthe extended portion.

IGNA'I'IUS KREITLER.

